A racecar travels around an oval track. Let d represent the distance driven by the racecar (in meters) from the starting line, and let t represent the number of seconds since the racecar left the starting line. The function f, defined by the formula f(t)=0.5t2+2t, determines the distance the racecar has driven in meters when the racecar has been traveling for t seconds. Based on this description, what is the meaning of f(4)−f(3)? The time elapsed as the car moved from the 3 meter mark to the 4 meter mark The increase in speed as the car moved from the 3 meter mark to the 4 meter mark The distance traveled by the car from t=3 to t=4 seconds The distance traveled by the car for any 1 seconds The average speed of the car from t=3 to t=4 seconds

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